She cannot forgive him for forgetting her birthday.
Examples of forgive
forgive
It's not the Taj Mahal of baseball, but, forgive me, it's minor-league baseball.
From the denverpost.com
I hope one day you will be able to forgive me, not for my sake but for your own.
From the edition.cnn.com
Don't usually like to correct spelling Rob, but this is IMPORTANT-so forgive me.
From the thisishampshire.net
Here is a young mum who was looking for love and will now never forgive herself.
From the nzherald.co.nz
Hopefully, they will find in their heart to forgive our ineptitude by Christmas.
From the economist.com
I will forgive, I would say it in front of the murderers, but I will not forget.
From the guardian.co.uk
Before he burned his bridges in Denver, he had an audience ready to forgive him.
From the online.wsj.com
Which may be harder for his wife to forgive than a casual fling might have been.
From the post-gazette.com
Voters have shown a marked willingness to forgive a politically effective rogue.
From the online.wsj.com
More examples
Stop blaming or grant forgiveness; "I forgave him his infidelity"; "She cannot forgive him for forgetting her birthday"
Absolve from payment; "I forgive you your debt"
(forgiveness) compassionate feelings that support a willingness to forgive
(forgiveness) the act of excusing a mistake or offense
(forgiving) inclined or able to forgive and show mercy; "a kindly forgiving nature"; "a forgiving embrace to the naughty child"
(forgiving) absolvitory: providing absolution
Forgive is the second studio album by American country music artist Rebecca Lynn Howard. The album was released in September 2002 by MCA Nashville. ...
Forgiveness is typically defined as the process of concluding resentment, indignation or anger as a result of a perceived offense, difference or mistake, and/or ceasing to demand punishment or restitution. ...
(Forgiven (Disturbed song)) Ten Thousand Fists is the third album by American Heavy metal band Disturbed. ...